xzfgrep (1)

Leading comments

Original zgrep.1 for gzip: Jean-loup Gailly
                           Charles Levert <charles@comm.polymtl.ca>

Modifications for XZ Utils: Lasse Collin

License: GNU GPLv2+

(The comments found at the beginning of the groff file "man1/xzfgrep.1".)

NAME

xzgrep - search compressed files for a regular expression

SYNOPSIS

xzgrep [grep_options] [-e] pattern file...
xzegrep ...
xzfgrep ...
lzgrep ...
lzegrep ...
lzfgrep ...

DESCRIPTION

xzgrep invokes grep(1) on files which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), bzip2(1), or lzop(1). All options specified are passed directly to grep(1).

If no file is specified, then standard input is decompressed if necessary and fed to grep(1). When reading from standard input, gzip(1), bzip2(1), and lzop(1) compressed files are not supported.

If xzgrep is invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1). The same applies to names lzgrep, lzegrep, and lzfgrep, which are provided for backward compatibility with LZMA Utils.

ENVIRONMENT

GREP

If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1).

SEE ALSO

grep(1), xz(1), gzip(1), bzip2(1), lzop(1), zgrep(1)